May 1957 - December 1957
The Board of the Electrotechnische Vereeniging of {period} has been constituted as follows:
L.P.H.M. Korting | President |
W.R.P. de Jonge | Secretaris |
G.G. Sipkes | Thesaurier |
A.O. Schaap | Vice-President |
A.N. Verveen | Commissaris |